Online PHP editor | refs for gfZrT

<?php class MyFilter extends FilterIterator implements Countable { public function accept() { return true; } public function count() { return $this->getInnerIterator()->count(); } } $it = new ArrayIterator(array(1, 2, 3)); $fi = new MyFilter($it); var_dump($it->count()); var_dump($fi->count()); var_dump(count($it)); var_dump(count($fi));